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Benjamin Tappan Judge of the United States District Court for the District of Ohio In office October 12, 1833 – May 29, 1834 Appointed by Andrew Jackson Preceded by John Wilson Campbell Succeeded by Humphrey H. Leavitt United States Senator from Ohio In office March 4, 1839 – March 4, 1845 Preceded by Thomas Morris Succeeded by Thomas Corwin Member of the Ohio Senate In office 1803-1804 Personal details Born ( 1773-05-25 ) May 25, 1773 Northampton, Massachusetts Died April 20, 1857 (1857-04-20) (aged 83) Steubenville, Ohio Resting place Union Cemetery Political party Democratic Benjamin Tappan (May 25, 1773 – April 20, 1857) was an Ohio judge and Democratic politician who served in the Ohio State Senate and the United States Senate. He was an early settler of the Connecticut Western Reserve in northeastern Ohio and was one of the first settlers in Portage County and the founder of the city of Ravenna, Ohio. [1] Conten...

Ordovician Period 485.4–443.8 million years ago PreЄ Є O S D C P T J K Pg N Mean atmospheric O 2 content over period duration c. 13.5 vol % [1] [2] (68 % of modern level) Mean atmospheric CO 2 content over period duration c. 4200 ppm [3] (15 times pre-industrial level) Mean surface temperature over period duration c. 16 °C [4] (2 °C above modern level) Sea level (above present day) 180 m; rising to 220 m in Caradoc and falling sharply to 140 m in end-Ordovician glaciations [5] Key events in the Ordovician view  •  discuss  •  edit -485 — – -480 — – -475 — – -470 — – -465 — – -460 — – -455 — – -450 — – -445 — – P a l e o z o i c Cambrian O r d o v i c i a n Silurian E a r l y M i d d l e L a t e Tremadocian Floian Dapingian Darriwilian Sandbian Katian Hirnantian           ← First land plant spores [6] ← Ordovician meteor event ← Archaeocyatha extinction ...